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Muhammad Usman, Speaker at Chemical Engineering Conferences
King Fahd University of Petroleum and Minerals, Saudi Arabia
Title : The conversion of poly aromatic hydrocarbon into fine chemicals and fuels over molybdenum phosphide supported on various acidic and porous materials


The search for the cheap, efficient and highly selective catalytic process of heavy aromatics for fine chemicals and fuels is currently a popular research direction. Coal tar is the major byproduct during the coal carbonization process, which are the major and important feedstocks composed of various chemicals and carbon-based materials. Naphthalene which is a major component in coal tar could be converted into a useful product i.e., Tetralin by controlled partial hydrogenation. The quest for finding an appropriate catalyst in this direction is the topic of this work. In this study, the hydrogenation of polyaromatic hydrocarbon-naphthalene was conducted over metal phosphide catalysts (MoP) supported on three different acidic zeolite (Hbeta, HZSM-5, and HY) and inert activated carbon (AC) to know the effect of different acidic density and pore size on the conversion of polyaromatic hydrocarbon into fine chemicals and fuels. These results revealed that the MoP/Hbeta having the highest pore size and strong acidity cause deep cracking and are highly selective to low carbon fuels. The selectivity to ring opening product decrease by decreasing the acid density. Lowest cracking and high selectivity to tetralin were found on the MoP/AC due to the weak acidity, microporous structure, and low reduction temperature which don’t allow the reactant feed to react effectively to the catalyst surface. It was concluded that the coal and coal tar aromatics can be converted selectively to various chemicals and fuels by selecting the optimum metal phosphide supported on zeolites having appropriate acidity and porous structure.


Dr. Muhammad Usman received Master degree in Chemistry from the University of Peshawar, Pakistan in 2009. Dr. Usman earned Ph.D. in 2014 from Institute of Process Engineering, Chinese Academy of Sciences, China. He has four years of postdoc research experience from Tsinghua University China and Berkeley Global Science Institute at KFUPM. At present, Dr. Muhammad Usman is serving as a Research Scientist (~ Assistant Professor) in the Center of Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Saudi Arabia. Dr. Usman expertise included zeolite for heterogeneous catalysis, adsorption kinetics, catalytic modeling designing & application. Dr. Usman holds two US patents, published > 20 peer-reviewed international journals (like ACS catalysis, J Mat Chem A, Chemical Eng J, AIChE) in addition to several conference proceedings/presentations.